The largest earthwork effigy in the world.

Take a drunken tour inside the world's largest known geode.

A 30-foot stack of piano keys memorializes one of the greatest keys players in jazz history.

Solving a 60-year mystery finally gave a name to the young woman known only by the color of her clothes.

This magnificent Cincinnati graveyard is also a popular public park.

An abandoned asylum incorporated into a college campus.

What is it about mushrooms that makes people wish they lived inside of them?

Rare recess caves fill this unbelievably beautiful Ohio park.

Prison made famous by The Shawshank Redemption has been out of commission since 1990.

The angel of death appears to weep black tears at this grave marker.

The world's third-largest crystal sphere has sat in the Penn Museum since 1927 with the exception of one outlandish theft.

The only statue of its kind to commemorate Washington's beginnings as an officer of the British Colonial Militia.

The residents of this ominous-sounding street in Pennsylvania liked its name so much they fought to keep it.

A small museum along the Susquehanna River is home to a rich collection of Native American artifacts.

The Cold War-era "underground Pentagon" is a sprawling subterranean hideaway for the Defense Department.

Once the most painted on object in the world, this short campus fence is well on its way to being so again.

The last street in Pittsburgh that's paved with wood.

A glittering Thai Buddhist temple in suburban Pennsylvania.

One of the oldest of its kind.

This historic old movie house was the scene of one of the Blob's most iconic attacks.

Enjoy a slice while browsing the world's largest collection of pizza memorabilia.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.